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<h1 align="center">Mass Computation</h1>

<p align="center">
The masses of the structures are always displayed in the drawing
canvas. Next to the value of the mass, the current settings
(monoisotopic or average, derivatization and ion) are displayed. If
the fragment panel is open, for each fragment the value of the mass is
shown in the third column of the table. The mass settings of the
fragments are the same used to compute the masses of the whole
structures. To change the mass settings click on &quot;Tool -> Mass
Options of all structures&quot;.  A dialog box will open where the
settings can be changed. The values of the masses for all structures
and will be automatically updated while a new computation of fragments
will be needed.
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